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ICANN DNS Symposium | November 2022

2022 ICANN DNS Symposium & IANA Community Day

The fifth ICANN DNS Symposium (IDS 2022) will be held 15-16 November 2022 in Brussels, Belgium. IDS 2022 will be held immediately before the IANA Community Day on 17 November.

The theme for IDS 2022 is "Examining the effects of both centralization and diversification in the DNS."

The devices of more than 20% of Internet users are configured to use public Domain Name System (DNS) resolvers, according to some studies. A small set of registry service providers are responsible for a large set of top-level domains (TLDs). An attack against a single service provider's infrastructure can affect a large percentage of Internet users. At the same time, there are more public resolver services and more TLDs than ever. This prompts the question, "Is the DNS overly centralized or adequately diversified?" ICANN invites speakers to present topics on centralization and diversification in the DNS. Presentations could include measurements and fact-based predictions, and discussions about risk mitigation and scalability in relation to either greater or lesser centralization, greater or lesser diversity, or both.

Adjacent to the ICANN DNS Symposium, IANA will be holding a half-day workshop focused on key technical evolution projects within IANA relating to the DNS. Topics will include a discussion of how to perform a DNSSEC algorithm rollover for the DNS root zone, and reviewing and updating the TLD technical requirements for root zone changes. TLD managers, DNS experts, and other interested parties are encouraged to attend.





IANA Community Day





Hotel and Venue:
Brussels Marriott Hotel Grand Place
Rue Auguste Orts 3-7
1000 Brussels, Belgium
T: +32 2 516 9090

Hotel Website: Click here

Register to Attend IDS 2022 and/or the IANA Community Day*

*There will be no onsite registration facilities for this event so you must register in advance. In-person registration will close on 12 November 2022.

Remote participation information will be forthcoming

Health and Safety Measures

Contact Us

Email with "ICANN DNS Symposium" in the subject line.

IDS Archive

View IDS 2021 webpage (virtual event)

View IDS 2020 webpage (canceled event)

View IDS 2019 webpage

View IDS 2018 webpage

View IDS 2017 webpage

Domain Name System
Internationalized Domain Name ,IDN,"IDNs are domain names that include characters used in the local representation of languages that are not written with the twenty-six letters of the basic Latin alphabet ""a-z"". An IDN can contain Latin letters with diacritical marks, as required by many European languages, or may consist of characters from non-Latin scripts such as Arabic or Chinese. Many languages also use other types of digits than the European ""0-9"". The basic Latin alphabet together with the European-Arabic digits are, for the purpose of domain names, termed ""ASCII characters"" (ASCII = American Standard Code for Information Interchange). These are also included in the broader range of ""Unicode characters"" that provides the basis for IDNs. The ""hostname rule"" requires that all domain names of the type under consideration here are stored in the DNS using only the ASCII characters listed above, with the one further addition of the hyphen ""-"". The Unicode form of an IDN therefore requires special encoding before it is entered into the DNS. The following terminology is used when distinguishing between these forms: A domain name consists of a series of ""labels"" (separated by ""dots""). The ASCII form of an IDN label is termed an ""A-label"". All operations defined in the DNS protocol use A-labels exclusively. The Unicode form, which a user expects to be displayed, is termed a ""U-label"". The difference may be illustrated with the Hindi word for ""test"" — परीका — appearing here as a U-label would (in the Devanagari script). A special form of ""ASCII compatible encoding"" (abbreviated ACE) is applied to this to produce the corresponding A-label: xn--11b5bs1di. A domain name that only includes ASCII letters, digits, and hyphens is termed an ""LDH label"". Although the definitions of A-labels and LDH-labels overlap, a name consisting exclusively of LDH labels, such as"""" is not an IDN."